Re: init's children list is long and slows reaping children.

"H. Peter Anvin" <[email protected]> writes:

> Eric W. Biederman wrote:
>>
>> Oleg is coming from a different case where it was found that exiting kernel
>> threads were causing problems for nash when nash was run as init in an
>> initramfs.  While I think that case is likely a user space bug because
>> nash should check the pid from waidpid before assuming the process it
>> was waiting for returned.
>>
>
> Are you saying waitpid() (wait4) *with a pid specified* can return another pid?
> That definitely sounds like a bug.

No.

For the full context look back a couple of messages.

I'm guessing the issue is nash just calls wait and doesn't check the
returned pid value, assuming it is the only child it forked returning.
Which is valid except when you are running as pid == 1.

Eric
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: init's children list is long and slows reaping children.
    • From: Jeremy Fitzhardinge <[email protected]>
  • Re: init's children list is long and slows reaping children.
    • From: "H. Peter Anvin" <[email protected]>

• References:
  • Re: init's children list is long and slows reaping children.
    • From: Oleg Nesterov <[email protected]>
  • Re: init's children list is long and slows reaping children.
    • From: [email protected] (Eric W. Biederman)
  • Re: init's children list is long and slows reaping children.
    • From: Oleg Nesterov <[email protected]>
  • Re: init's children list is long and slows reaping children.
    • From: [email protected] (Eric W. Biederman)
  • Re: init's children list is long and slows reaping children.
    • From: Oleg Nesterov <[email protected]>
  • Re: init's children list is long and slows reaping children.
    • From: Linus Torvalds <[email protected]>
  • Re: init's children list is long and slows reaping children.
    • From: [email protected] (Eric W. Biederman)
  • Re: init's children list is long and slows reaping children.
    • From: "H. Peter Anvin" <[email protected]>

• Prev by Date: Re: init's children list is long and slows reaping children.
• Next by Date: Re: init's children list is long and slows reaping children.
• Previous by thread: Re: init's children list is long and slows reaping children.
• Next by thread: Re: init's children list is long and slows reaping children.
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]